1166324220 has 72 divisors (see below), whose sum is σ = 3550594320. Its totient is φ = 309899520.

The previous prime is 1166324183. The next prime is 1166324231. The reversal of 1166324220 is 224236611.

1166324220 is a `hidden beast` number, since 1 + 1 + 6 + 632 + 4 + 2 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39051 + ... + 62109.

It is an arithmetic number, because the mean of its divisors is an integer number (49313810).

Almost surely, 2^1166324220 is an apocalyptic number.

1166324220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166324220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1775297160).

1166324220 is an abundant number, since it is smaller than the sum of its proper divisors (2384270100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166324220 is a wasteful number, since it uses less digits than its factorization.

1166324220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23355 (or 23350 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1166324220 is about 34151.4892793858. The cubic root of 1166324220 is about 1052.6235887543.

The spelling of 1166324220 in words is "one billion, one hundred sixty-six million, three hundred twenty-four thousand, two hundred twenty".